Datasheets

MIC2169 Micrel MIC2169500kHz PWM Synchronous Buck Control IC General Description Features The MIC2169 is a high-efficiency, simple to use 500kHz PWMsynchronous buck control IC housed in a small MSOP-10package. The MIC2169 allows compact DC/DC solutionswith a minimal external component count and cost.The MIC2169 operates using a 3V to 14.5V input, withoutthe need for any additional bias voltage. The output voltagecan be precisely regulated down to 0.8V. The adaptive allN-Channel MOSFET drive scheme allows efficiencies, over95%, across a wide load range.The MIC2169 senses current across the high-side N-ChannelMOSFET, eliminating the need for an expensive and lossycurrent-sense resistor. Current limit accuracy is maintainedvia a positive temperature coefficient that tracks the increasing RDS(ON) of the external MOSFET. Additional cost andspace are saved by the internal in-rush-current limiting anddigital soft-start.The MIC2169 is available in a 10-pin MSOP package, with awide junction operating range of вЂ“40В°C to +125В°C.All support documentation can be found on MicrelвЂ™s web siteat: www.micrel.com. 3V to 14.5V input voltage rangeAdjustable output voltage down to 0.8VUp to 95% efficiency500kHz PWM operation …

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Production (Appropriate for new designs but newer alternatives may exist)